CA2187111A1 - Multi-purpose measuring and drawing instrument - Google Patents
Multi-purpose measuring and drawing instrumentInfo
- Publication number
- CA2187111A1 CA2187111A1 CA002187111A CA2187111A CA2187111A1 CA 2187111 A1 CA2187111 A1 CA 2187111A1 CA 002187111 A CA002187111 A CA 002187111A CA 2187111 A CA2187111 A CA 2187111A CA 2187111 A1 CA2187111 A1 CA 2187111A1
- Authority
- CA
- Canada
- Prior art keywords
- rectangular plate
- plate
- semi
- elongated plate
- protractor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
- B43L13/002—Angle intersecting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/02—Draughting machines or drawing devices for keeping parallelism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L7/00—Straightedges
- B43L7/005—Straightedges combined with other drawing aids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B11/00—Teaching hand-writing, shorthand, drawing, or painting
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B11/00—Teaching hand-writing, shorthand, drawing, or painting
- G09B11/04—Guide sheets or plates; Tracing charts
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Drawing Aids And Blackboards (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
An instrument for performing various drawings and measurement functions is disclosed. The instrument comprises a rectangular plate, an elongated plate mounted on the rectangular plate and a compass. The rectangular plate has marking of length along the longer and shorter edges, a protractor is printed or etched onto the surface of the rectangular plate and a semi-circular recess formed at the surface thereof having the same origin as the protractor. The elongated plate includes a straight edge, a semi-circular protrusion portion on the bottom surface for slidable engagement with the semi-circular recess on the rectangular plate, the elongated plate is guided to rotate relative to the rectangular plate by the slidable engagement. The top surface of the elongated plate has clips and grooves to securely fasten a compass, but will allow easy removal of the compass when needed and plurality of holes at appropriate length along the straight edge for passing through a drawing pen.
Description
MULTI-PURPOSE MEASURING AND DRAWING INSTRUMENT
Background of the invention The present invention relates generally to measuring and drawing instrument, andparticularly to instruments designed to simplify and facilitate certain measuring and drawing activities.
People from all walks of life use a wide variety of instruments in performing various drawings and measuring tasks. Examples of these instruments include rulers, protractors, compasses, straight edges, various triangles of different angles. The ability to quickly and accurately laying out a drawing or measuring required the person to spend much time in picking and setting down various tools used at various times to draw lines, l 0 angles, circles and the like. In addition, a multi-purpose tool is more compact and costs effective.
Various types of multiple purpose drawing and measuring instrument, such as a device that combine a compass, a straight edge, protractors and rulers are known. One type combines a ruler body and a direction wheel shaft assembly to facilitate the drawing of parallel lines and a plurality of holes at appropriate position along the edge of the ruler for passing through of a drawing pen to form arcs and circles as with a compass. This type has the disadvantages of being difficult to use if one wanted to draw line at different angles or make precise circles.
Another type of instrument comprises an elongated plate having a straight edge ~o and a measurement region. A protractor plate is connected to the elongated plate and has a rotatable center dial. The rotatable center dial has a slot which has the same length as the dial's radius for the drawing and measuring of angles. An example of such instrument is described and illustrated in United State Patent No. 5,426,890, dated Jun 27, 1995, granted to Gabriel E. Concari et al. for a "Measuring and Drawing Instrument".
Such device has several disadvantages. While it permits the drawing of various angles, it relies on the radius of the rotatable center dial as straight edge to draw the angles. In many instances when a longer length of the angular lines is required additional effort is 21 ~71 1 1 spent in setting down the tool to draw longer lines. Off course to prevent such a problem the radius of the protractor can be increased, but as a result the instrument would be bulky and impractical. The instrument also includes holes through the elongated plate. The holes are configured to receive a marking instrument so the device can be used as a compass. Again, such device is clearly limited in drawing a precise circle.
Summary of the invention Accordingly, it is an object of this invention to provide an improved drawing and measuring tool capable of performing multiple functions.
It is another object of this invention to provide a variable angle straight edge that 10 is simple to use. It is further object of this invention to provide a compact tool capable of drawing parallel lines at various angles and a holder or casing for a compass.
In accordance with a preferred embodiment of the invention, a drawing and measuring instrument comprises of a rectangular plate and an elongated plate rotatably mounted on the rectangular plate. The rectangular plate has indicia along edges or in the form of measuring rules or rulers, if desired. A protractor is printed, etched or scribed onto the surface of the rectangular plate with its origin located along the straight edge of the plate and a semi-circular recess formed at the surface possessing the same origin as the protractor. An elongated plate has a semi-circular protrusion portion on the bottom surface for slidable engagement with the semi-circular recess on the plate. The elongated ~o plate is guided to rotate relative to the plate by the slidable engagement. The slidable engagement can be easily coupled together without any additional coupling device. The top surface of the elongated plate has grooves and clips to securely fasten a compass, but allow easy removal of the compass when needed. Marking of length along the straight edge of the elongated plate and a plurality of holes at appropl iate positions along the marking for passing through of a drawing pen.
According to another embodiment, the instrument comprises a rectangular plate and a generally a flat protractor disk having a straight edge portion and a semi-circular portion. The rectangular plate has indicia along the edges or in the forms of rulers and has a semi-circular recess formed at the surface possessing the same origin as the semi-circular portion on the protractor. A protractor having the origin of the semi-circular portion located at the center point of the edge of the straight edge portion. The bottom surface of the protractor has protrusion portion for slidable engagement with the semi-circular recess on the plate. The slidable engagement can be easily coupled together without any additionai coupling device. Marking of length along the straight edge and a to plurality of holes at appropliate positions along the markings for passing through of a drawing pen.
Description of the drawings.
A preferred embodiment of the invention is illustrated in the accompanying drawings, in which;
FIG. 1 is a perspective view of the invention;
FIG. 2 is a perspective and exploded view of the invention;
FIG. 3 illustrate the sliding engagement of the present invention;
FIG. 4 is a perspective view of an alternate embodiment of the invention;
FIG. 5 is a perspective view of another alternate embodiment of the invention;
lc~ FIG. 6 is an illustration of the manner of use of the embodiment shown in FIG. 1 Detail description of the preferred embodiment.
Referring to FIG. 1-5 a preferred embodiment of a multi-purpose drawing and measuring instrument 10, according to the present invention, is illustrated in FIG. 1. The instrument 10 comprises a rectangular plate 20, an elongated plate 40 and a compass 50.
Preferably, the rectangular plate 20 and the elongated plate 40 comprise a substantially transparent plastic material allowing observation of indicator marks and drawing surface.
The rectangular plate 20 comprises of straight edges 24, 28 and ends 25, 26 and has marking of length along the edges 24, 25 and 26. The markings preferably provide with typical ruler distance indicia formed on the bottom surface thereof. A protractor 30 printed, etched or scribed onto the surface with origin locate at point 27 the mid-point of the straight edge 24. A semi-circular recess 32 etched into the surface thereof with the origin at point 27. Two "bumps" 23 located near the edges 25 and 26. The purpose of IC) these "bumps" is to hold the rotatable elongated plate 40 from sliding when angular measurement is not required. The elongated plate 40 has preferably elongated rectangular form comprises a semi-circular protrusion 45 on the bottom surface having the origin at point 27. The protrusion includes a ridge or tongue 47 which is configured to couple with groove 37On the semi-circular recess 32 in a manner that allows the elongated plate 40 to rotated relative to the rectangular plate 20. The ridge 47 cooperates with the groove 37 to hold the elongated plate 40 in place while the rotation is performed. However, the elongated plate 40 and the rectangular plate 20 could be rotatably connected in a variety of ways, i.e. the elongated plate 40 can be coupled with the rectangular plate 20 using a pivot pin 50 located at intersection of the line 52 and 51 which coincide with the origin 2~ 53 of the protractor as illustrated FIG. 5, and the pivot pin member 50 extends through the elongated plate 40 and the origin 53 of the rectangular plate 20. Also the semi-circular recess and protrusion can be easily exchanged.
The top of the elongated plate 40 includes a ruler indicia 44 along the edge 42 and plurality of holes 42 at applop~iate length along the edge 42 for passing through a writing instrument. Also on the top surface is groove 41 which has the same shape as thecompass 50 and clips 43. The combination of groove and clips will help to fasten the compass, but will allow easy removal when needed.
Refer now to FIG. 4 an alternate embodiment of the present invention is illustrated. The instrument 10A comprises of a substantially transparent material, a 30 rectangular plate 20A and a flat protractor disk 60A having a straight edge portion 40A
21 ~71 1 1 and a semi-circular portion 30A. The rectangular plate 20A comprises of straight edges 24A, 28A and ends 25A, 26A and has marking of length 22A and 21A along the edges24A, 25A and 26A. The markings 21A and 22A preferably provide typical ruler distance indicia formed on the bottom surface thereof. A semi-circular recess 32A is etched into the surface thereof with the origin located at point 27A. Two "bumps" 23A located near the edges 25A and 26A. The purpose of these "bumps" is to hold the rotating protractor disk 60A from sliding when angular measurement is not required. The protractor disk 60A has a semi-circular protrusion 45A on the bottom surface having the same origin at point 27A. The protrusion includes a ridge or tongue 47A which is configured to couple with groove 37A on the semi-circular 32A in a manner that allows the protractor disk 60A to rotate relative to the rectangular plate 20A. The ridge 47A cooperates with the groove 37A to fasten the protractor disk in place while the rotation is performed. Ruler indicia and plurality of holes at app~opriate position can be provided along the edge 42A, if desired. This then would further facilitate use of the instrument in accurately drawing a line segment of pre-selected length and drawing arcs of constant radius.
The use of the tool as a variable angle straight edge is illustrated in FIG. 6. For example, if a person using the instrument 10 desires to draw a 60 degree angle, this can be done by simply drawing two lines. First, draw a line from left to right along the skaight edge 24 from the point 27 which is the end point of the perpendicular line 36 2O until it reaches a desired length. Second, rotate the elongated plate 40 until the straight edge 42 aligned with the indicator mark on the protractor 30 labeled as 60 degrees then strike a line along the straight edge 42 until it reaches the rectangular plate 20 which is the point of origin 27. The tool design allows a user to strike any angle easily and accurately from a given point on any line. It is a simple procedure of setting the tool along a line and rotates the elongated plate 40.
Additional usage of the tool is to draw parallel lines and arcs of different radius.
To draw parallel line a person can use the indicator marks along the edges 25 and 26 or one can rotate the elongated plate 40 until it is perpendicular with the rectangular plate 20 and use the marking along the edge 42 as a guide, then draw lines along the rectangular plate edge 24. By insert a writing instrument into one of the holes 42 and rotate the elongated plate 40 a person can draw an arc of constant radius.
Finally, to draw circles or arc of various radii, a person can remove the compass 50 from the instrument.
Various changes and modification will occur to those skilled in the art without departing from the true scope of the invention. Obviously the shape of the plate 20 and the elongated plate 40 can be different and the protractor can be place at different location on the surface of the plate 20 as long as the origin of the rotating portion of the plate 20 and the elongated plate 40 coincide . The embodiment shown in the drawing and /O described above is to be considered as illustrative only of the feature of the invention.
Background of the invention The present invention relates generally to measuring and drawing instrument, andparticularly to instruments designed to simplify and facilitate certain measuring and drawing activities.
People from all walks of life use a wide variety of instruments in performing various drawings and measuring tasks. Examples of these instruments include rulers, protractors, compasses, straight edges, various triangles of different angles. The ability to quickly and accurately laying out a drawing or measuring required the person to spend much time in picking and setting down various tools used at various times to draw lines, l 0 angles, circles and the like. In addition, a multi-purpose tool is more compact and costs effective.
Various types of multiple purpose drawing and measuring instrument, such as a device that combine a compass, a straight edge, protractors and rulers are known. One type combines a ruler body and a direction wheel shaft assembly to facilitate the drawing of parallel lines and a plurality of holes at appropriate position along the edge of the ruler for passing through of a drawing pen to form arcs and circles as with a compass. This type has the disadvantages of being difficult to use if one wanted to draw line at different angles or make precise circles.
Another type of instrument comprises an elongated plate having a straight edge ~o and a measurement region. A protractor plate is connected to the elongated plate and has a rotatable center dial. The rotatable center dial has a slot which has the same length as the dial's radius for the drawing and measuring of angles. An example of such instrument is described and illustrated in United State Patent No. 5,426,890, dated Jun 27, 1995, granted to Gabriel E. Concari et al. for a "Measuring and Drawing Instrument".
Such device has several disadvantages. While it permits the drawing of various angles, it relies on the radius of the rotatable center dial as straight edge to draw the angles. In many instances when a longer length of the angular lines is required additional effort is 21 ~71 1 1 spent in setting down the tool to draw longer lines. Off course to prevent such a problem the radius of the protractor can be increased, but as a result the instrument would be bulky and impractical. The instrument also includes holes through the elongated plate. The holes are configured to receive a marking instrument so the device can be used as a compass. Again, such device is clearly limited in drawing a precise circle.
Summary of the invention Accordingly, it is an object of this invention to provide an improved drawing and measuring tool capable of performing multiple functions.
It is another object of this invention to provide a variable angle straight edge that 10 is simple to use. It is further object of this invention to provide a compact tool capable of drawing parallel lines at various angles and a holder or casing for a compass.
In accordance with a preferred embodiment of the invention, a drawing and measuring instrument comprises of a rectangular plate and an elongated plate rotatably mounted on the rectangular plate. The rectangular plate has indicia along edges or in the form of measuring rules or rulers, if desired. A protractor is printed, etched or scribed onto the surface of the rectangular plate with its origin located along the straight edge of the plate and a semi-circular recess formed at the surface possessing the same origin as the protractor. An elongated plate has a semi-circular protrusion portion on the bottom surface for slidable engagement with the semi-circular recess on the plate. The elongated ~o plate is guided to rotate relative to the plate by the slidable engagement. The slidable engagement can be easily coupled together without any additional coupling device. The top surface of the elongated plate has grooves and clips to securely fasten a compass, but allow easy removal of the compass when needed. Marking of length along the straight edge of the elongated plate and a plurality of holes at appropl iate positions along the marking for passing through of a drawing pen.
According to another embodiment, the instrument comprises a rectangular plate and a generally a flat protractor disk having a straight edge portion and a semi-circular portion. The rectangular plate has indicia along the edges or in the forms of rulers and has a semi-circular recess formed at the surface possessing the same origin as the semi-circular portion on the protractor. A protractor having the origin of the semi-circular portion located at the center point of the edge of the straight edge portion. The bottom surface of the protractor has protrusion portion for slidable engagement with the semi-circular recess on the plate. The slidable engagement can be easily coupled together without any additionai coupling device. Marking of length along the straight edge and a to plurality of holes at appropliate positions along the markings for passing through of a drawing pen.
Description of the drawings.
A preferred embodiment of the invention is illustrated in the accompanying drawings, in which;
FIG. 1 is a perspective view of the invention;
FIG. 2 is a perspective and exploded view of the invention;
FIG. 3 illustrate the sliding engagement of the present invention;
FIG. 4 is a perspective view of an alternate embodiment of the invention;
FIG. 5 is a perspective view of another alternate embodiment of the invention;
lc~ FIG. 6 is an illustration of the manner of use of the embodiment shown in FIG. 1 Detail description of the preferred embodiment.
Referring to FIG. 1-5 a preferred embodiment of a multi-purpose drawing and measuring instrument 10, according to the present invention, is illustrated in FIG. 1. The instrument 10 comprises a rectangular plate 20, an elongated plate 40 and a compass 50.
Preferably, the rectangular plate 20 and the elongated plate 40 comprise a substantially transparent plastic material allowing observation of indicator marks and drawing surface.
The rectangular plate 20 comprises of straight edges 24, 28 and ends 25, 26 and has marking of length along the edges 24, 25 and 26. The markings preferably provide with typical ruler distance indicia formed on the bottom surface thereof. A protractor 30 printed, etched or scribed onto the surface with origin locate at point 27 the mid-point of the straight edge 24. A semi-circular recess 32 etched into the surface thereof with the origin at point 27. Two "bumps" 23 located near the edges 25 and 26. The purpose of IC) these "bumps" is to hold the rotatable elongated plate 40 from sliding when angular measurement is not required. The elongated plate 40 has preferably elongated rectangular form comprises a semi-circular protrusion 45 on the bottom surface having the origin at point 27. The protrusion includes a ridge or tongue 47 which is configured to couple with groove 37On the semi-circular recess 32 in a manner that allows the elongated plate 40 to rotated relative to the rectangular plate 20. The ridge 47 cooperates with the groove 37 to hold the elongated plate 40 in place while the rotation is performed. However, the elongated plate 40 and the rectangular plate 20 could be rotatably connected in a variety of ways, i.e. the elongated plate 40 can be coupled with the rectangular plate 20 using a pivot pin 50 located at intersection of the line 52 and 51 which coincide with the origin 2~ 53 of the protractor as illustrated FIG. 5, and the pivot pin member 50 extends through the elongated plate 40 and the origin 53 of the rectangular plate 20. Also the semi-circular recess and protrusion can be easily exchanged.
The top of the elongated plate 40 includes a ruler indicia 44 along the edge 42 and plurality of holes 42 at applop~iate length along the edge 42 for passing through a writing instrument. Also on the top surface is groove 41 which has the same shape as thecompass 50 and clips 43. The combination of groove and clips will help to fasten the compass, but will allow easy removal when needed.
Refer now to FIG. 4 an alternate embodiment of the present invention is illustrated. The instrument 10A comprises of a substantially transparent material, a 30 rectangular plate 20A and a flat protractor disk 60A having a straight edge portion 40A
21 ~71 1 1 and a semi-circular portion 30A. The rectangular plate 20A comprises of straight edges 24A, 28A and ends 25A, 26A and has marking of length 22A and 21A along the edges24A, 25A and 26A. The markings 21A and 22A preferably provide typical ruler distance indicia formed on the bottom surface thereof. A semi-circular recess 32A is etched into the surface thereof with the origin located at point 27A. Two "bumps" 23A located near the edges 25A and 26A. The purpose of these "bumps" is to hold the rotating protractor disk 60A from sliding when angular measurement is not required. The protractor disk 60A has a semi-circular protrusion 45A on the bottom surface having the same origin at point 27A. The protrusion includes a ridge or tongue 47A which is configured to couple with groove 37A on the semi-circular 32A in a manner that allows the protractor disk 60A to rotate relative to the rectangular plate 20A. The ridge 47A cooperates with the groove 37A to fasten the protractor disk in place while the rotation is performed. Ruler indicia and plurality of holes at app~opriate position can be provided along the edge 42A, if desired. This then would further facilitate use of the instrument in accurately drawing a line segment of pre-selected length and drawing arcs of constant radius.
The use of the tool as a variable angle straight edge is illustrated in FIG. 6. For example, if a person using the instrument 10 desires to draw a 60 degree angle, this can be done by simply drawing two lines. First, draw a line from left to right along the skaight edge 24 from the point 27 which is the end point of the perpendicular line 36 2O until it reaches a desired length. Second, rotate the elongated plate 40 until the straight edge 42 aligned with the indicator mark on the protractor 30 labeled as 60 degrees then strike a line along the straight edge 42 until it reaches the rectangular plate 20 which is the point of origin 27. The tool design allows a user to strike any angle easily and accurately from a given point on any line. It is a simple procedure of setting the tool along a line and rotates the elongated plate 40.
Additional usage of the tool is to draw parallel lines and arcs of different radius.
To draw parallel line a person can use the indicator marks along the edges 25 and 26 or one can rotate the elongated plate 40 until it is perpendicular with the rectangular plate 20 and use the marking along the edge 42 as a guide, then draw lines along the rectangular plate edge 24. By insert a writing instrument into one of the holes 42 and rotate the elongated plate 40 a person can draw an arc of constant radius.
Finally, to draw circles or arc of various radii, a person can remove the compass 50 from the instrument.
Various changes and modification will occur to those skilled in the art without departing from the true scope of the invention. Obviously the shape of the plate 20 and the elongated plate 40 can be different and the protractor can be place at different location on the surface of the plate 20 as long as the origin of the rotating portion of the plate 20 and the elongated plate 40 coincide . The embodiment shown in the drawing and /O described above is to be considered as illustrative only of the feature of the invention.
Claims
1. A multi-purpose drawing and measuring instrument on a surface comprising:
an elongated plate having at least on straight edge and two ends with ruler indicia to aid in marking straight lines or parallel lines on a surface;
(More claims will be added within the next 12 months.)
an elongated plate having at least on straight edge and two ends with ruler indicia to aid in marking straight lines or parallel lines on a surface;
(More claims will be added within the next 12 months.)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002187111A CA2187111A1 (en) | 1996-10-04 | 1996-10-04 | Multi-purpose measuring and drawing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002187111A CA2187111A1 (en) | 1996-10-04 | 1996-10-04 | Multi-purpose measuring and drawing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2187111A1 true CA2187111A1 (en) | 1998-04-04 |
Family
ID=4159021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002187111A Abandoned CA2187111A1 (en) | 1996-10-04 | 1996-10-04 | Multi-purpose measuring and drawing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2187111A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2413532A (en) * | 2004-04-29 | 2005-11-02 | Jeffrey Marvin Winston | Guide system for forming ink images |
-
1996
- 1996-10-04 CA CA002187111A patent/CA2187111A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2413532A (en) * | 2004-04-29 | 2005-11-02 | Jeffrey Marvin Winston | Guide system for forming ink images |
| GB2413532B (en) * | 2004-04-29 | 2006-12-27 | Jeffrey Marvin Winston | Guide system for forming ink images |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |